Case #1:
The fact that the guy thinks of the mannequin as his girlfriend/wife is really disturbing. The part at the end when he thought he was dancing with someone was worse. I wasn't really disturbed by his actions until he started dancing. I've seen many people with mental disorders back in America and in Korea so I didn't think he was crazy or anything bad like that. Although I thought it was kind of disturbing, at the same time I felt bad for him.